adb server version doesn't match this client

Question

Whenever I try to run adb devices:

            $ adb devices
            * daemon not running. starting it now *
            * daemon started su         


        

Answer 1

Are you using Genymotion for a virtual device?

if yes this error probably came out because ADB from Genymotion conflicted with your ADB from Android SDK(using same port number), to fix this simply go to settings => choose ADB tab => click on the option Use custom Android SDK Tools and set your SDK folder

after you configure this, try to restart your adb by going into folder platform-tools which adb placed and do this command:

• ./adb kill-server
• ./adb start-server

*tips: You may close the process of Genymotion before running the command above

Hope this help.